After the New Xbox One Experience Dashboard (otherwise known as the Windows 10 update) all games included in the Games with Gold program will be playable on an Xbox One. The new dashboard will be released to non preview members on November 12th.

In all seriousness though this good news, as some of 360 games with gold games have been pretty good. And it will be much easier to just load them up on the Xbone, rather than having to set up the 360.